Share your experience!
what app are you using in playing music?
have you tried changing the sounds settings?
try to play some music while you are on safe mode
I definitely will contact them. I'm more curious, if it's hardware fault or system upgrade could possibly affect the sound quality
I don't experience this with my Xperia X, it'll be wise to get it inspected, if possible record some videos, upload them on youtube
I think, I will require a good microphone to record that. For sure, the guy in the shop also hears the difference
After a replacement of "faulty" speakers by local service center, I still got the phone with the same cracks in the sound during playback.. problem is not solved..